Water-circulating pump



Patented Mar. 10, 1925.

UNITED stares PATENT oFFicE.

WILLIAM J. CAMPBELL, OF INDIANAPOLIS, INDIANA, ASSIGNOB TO GLIli'IiAX MA- i CHINERY COMPANY, OF INDIANAPOLIS,

INDIANA, A, CORPORATION OF INDIANA.

- WATER-om-GULATING PUMP;

Application filed October 17, 1923. Serial No; 669,032.

. To all whom it may concern:

Be it known that I. WILLIAM J. CAMPBELL, a citizen of the United States, residing at Indianapolis, in the county of Marion and State of Indiana, have invented a new and useful IVater-Circulating Pump, of which i invention.

Fig. 1 is a vertical section of a pump embodying my. invention, with adjacent poi"- tions of theengine of a well known make of automobiles, and Fig. 2 is a plan of the parts shown in Fig. 1.

In the drawings 10 indicates a fitting formed for attachment'at the water inlet opening of, the water jacket of engine 11.

Fitting 10 is provided with a water passage 12 having a circular receiving end to Which is secured a pump body 14 having a pump chamber 15 which, at its discharge end, registers with the receiving end of passage 12.

Body 14 is rovided with an extension 16 arranged'axia lly of pump chamber 15 and provided at its ends with shaft bearings 17, 17 separated by an oil chamber 18, and at its outer end provided with a packing gland 19.

Journalled in bearings 17 is an impeller shaft 20 the outer end of which carries a pulley 21. Secured to theinner end of shaft 20 is a screw-type impeller 22 lying within chamber 15. Y 7

Leading into the receiving end of chamber 15, preferably at an acute angle to the axis thereof, is an inlet passage 23 adapted to be connected, by any suitable connection, such as a flexible hose, with the lower part of a radiator (not shown).

As there is always a possibility that the belt driving pulley 21 may tend to thrust the shaft inwardly, I resist such thrust by a bridge bar 25 arranged across passage 12 and body 14: and having a central portion 26 against which the inner end of shaft 20 abuts. v V

Bar 25 and part 26 are preferably given stream-line cross-sections so as to offer minimum resistance to water flow.

It is important, in connection'withan'i peller of thetype shown,,t hatthe oncoming waterstream be prevented, from whirling,

and to accomplish this result, I carry the inlet passage 23 along each side of the rear bearing 17, and provide diametrically ar-. 1

stream-line section, baflie. ribs ranged, 23', 2s. a j H ,By bringing the inlet passage 23 into ,the

impeller chamber substantially in the line A of propulsion produced by the screw blades f of the impeller, I reduce to a minimum the resistance to flow through the pump.

The side pull of the belt may be resisted by a set screw 30 threaded with aboss 31 on 7 extension 16 and adaptedto be adjusted so as to contact with the body of engine 11. 7 Oil or grease may be delivered to the oil chamber 18 through a cup 32. a i

It will be noted that the constructionis such that the impeller chamber self draining without the need of speclal drainagepassages.

I claim as my invention:

A water circulating pump for enginesv comprising an elbowxfittlng having one face thereof finished to fit the water inlet ofan I i engine jacket and provided with means for securing said, fitting to the engine ]tCk8t,.

said fitting having a curved water passageengagement with said thrust bar, a screw type-impeller carried by. the' nner end of said shaft and arranged Within said impeller chamber, said impeller chamber having a Water inlet substantially axially thereto and extending into a diverging extension of said shaft bearing extension and baflle ribs arranged across the inlet passage closely adjacent the receiving end of the impeller,

said securingmeans for the elbow fitting constituting the sole mounting members for the circulating pump,

In witness whereof, I, WILLIAM J. CAMP BELL, have hereunto set my hand at Indian apolis, Indiana, this 13th day of October, A. D. one thousand nine hundred and twenty-three.

VILLIAM J. CAMPBELL. 

